I've gotten bits and pieces of information on this topic, so maybe I'm missing something. Is there a good tutorial/instructions on how to create a WAR file and deploy the infocenter in tomcat, that someone can point me to?

It seems to be quite difficult to match up the servletbridge pieces with the eclipse installation. Fortunatley Robert Sanders has had the presence of mind to publish a working war containing no documentation plugins to the web. All you need to do is unzip the war, copy your documentation plugins into the WEB-INF/plugins/ directory, zip it back up and deploy it.

I've tried it out, and it works perfectly. It based on 3.6.1. Robert's blog post about it is here, and the code itself is here. Note that you will need a google account to access the code.

I have done deployment of infocenters as war files using Eclipse 3.6.2 and Eclipse 4.2. For 3.6.2, I use the org.eclipse.equinox.servletbridge_1.2.0.v20100503.jar (for lib folder) and org.eclipse.equinox.http.servletbridge_1.0.200.v20100503.jar in the plugins folder. For 4.2, I use org.eclipse.equinox.servletbridge_1.2.200.v20120522-2049.jar (in the lib folder) and org.eclipse.equinox.http.servletbridge_1.0.300.v20120522-2049.jar in the plugins folder. The 3.6.2 based war files are compatible with Websphere 7.0, Jetty 7, and Tomcat 6. The Eclipse 4.2 based war files are compatible with WebSphere 8.5 (maybe 8.0 also), Jetty 8, and Tomcat 7.